Machine-gear.



No. 851.449. PATENTED APR. 23, 1907. S. W. SMITH 6: A. HOLLINGER.

Wm m H W-W. mm W MACHINE GEAR.

APPLICATION rmnn mm: 26 1900 SAMUEL W. sMITI-I AND ANDREW Hon Linens,()F CANTON, o1-11o.

MACHINE-GEAR.

Specification of Letters Patent.

Patented April 23, 1907.

Annllcation filed June 26,1906. Serial No. 323,294.

To all whom it mu 1 concern.-

thereby providing a wedge action which Be it known that we, SAMUEL W.Snrrn and Asoasw HOLLINGER, citizens of the United States, residing atCanton, in the county of'Stark and State of Ohio, have invented certainnew and useful Improvements 111 .\lachme-Gear; and we do hereby declarethat the follow mg is a full, clear, and

exact description of the same. reference be- 5 mg had to theaccompanying draw ings, making a part of this specification, and to thenumerals and figures of reference marked thereon, in which- Figure l isa side elevation showing the different parts of the gear properlyassembled, and showing )arts broken away and parts in section. tion onhne 2-2, Fig. 1.

Fig. 2 is a transverse. sec- Fig. 3 1s a view showing a portion of thesegmental toothed rim. toothed rims detached and their joined ends.

The present invention has relation to machine gear and it consists inthe different Fi 4 is a view showing the segmental 3 parts andcombination of parts hereinafter described and particularly pointed outin the claims.

Similar numerals of reference indicate corresponding parts in all thefigures of the drawing.

In the accompanying drawin the hub which is provided with or attachedweb 2, which of course ma any desired diameter reference beingl the sizeof the gear designed to be constructed. Upon the web .2 are located andattached the segmental toothed rims 3, which when attached areconcentric with the httb 1 and the web 2.

For the purpose of )rovidin means for attachin the segmental toothetrims 3 they are provided with a series of flanges 4, whic I flanges arespaced equal to the thickness of the web 2 at the place where theflanges 4 are brought into contact with said web, this feature beingbest illustrated in Fig. 2. The rims 2 are securely connected by meansof the split bolts 5, which split bolts are tapered and the smaller endsof each section bent so as to securely hold the bolt in proper position,and at the same time securely connect the segmental rims to the web '2.

it will be understood that by taperin the sections of the bolts 5 andforming salt seetions of a suitable size in cross-section with referenceto the aperture 6 in the flan 'es 4,

the integral be of 1nd to takes up the slack as between the rim sections of the web 2 and the flanges. In agear of this kind it isimportant. that there be no relative movement as between the detachablerims and the web and in order to assist in holding the toothed rimsections they are provided with the recesses 8 and the web provided withthe notches t), which recesses and notches are located at an angle to aradial line, by which arrangementthe keys or what might be termed dowelblocks 1() can be inserted either in the recesses S or the notches t)and the toothed rims brought toward each other and in contactwith theperiphery of the web .2 and the dowel blocks pro )erly entered asillustrated in Fig. 1.

1* or the purpose of insuring a proper joint or connection as betweenthe segmental toothed rim the sections are cut out at their ends u )on oposite sides so as to )IOdUCO a lap and the apped portions jointedtogether by means of the pin 11 oritsequivalent. \Ve have illustratedthe gear as a toothed gear, but it will be understood that we do not defsire to be confined to a toothed gear as our 1 represents i and thebolts said bolt sections can be driven on wise invention can be appliedequally as well to a smooth faced gear or what might be termed a beltear or friction gear, and of course sprocket gear. It will he understoodthat by providing the dowel blocks 10 that the strain as between the web.2 and the rim sections will be distributed as between said blocks 5. Bylocating the dowel blocks 10 at an angle to a radial line, the pressureor line of force will he at an angle to the radial line regardless ofthe direction of rotation, owing to the fact that. the dowel blocks uponopposite sides of a given radial line are set at. opposite angles. Thedowel blocks H) are tapered in opposite directions as best illustratedin Fig. I. so that when they are properly seated they will come in closecontact with the recesses 8 and the notches t), or in other words theywill be bound in their positions, when the rim members are brought intotheir proper positions, and concentric with the web or center of thegear.

For the purpose of holdin the divided bolt members after they bave liecnproperlv inserted their narrow extended ends are bent over and upon thelarger ends of said divided bolt members, thereby preventing anyrelative movement as between the bolt. members.

Having fully described our invention what located in notches in theperiphery of the 5 web and in the inner wall of t sect-ions, said dowelblocks tapered in opposite directions and located at an angle to aradial line, substantially as and for the purpose specified.

.2. In a machine gear, the combination of a hub and a web, a dividedrim, the ends of i said divided rim being lapped, and said am located inthe notches, said blocks tapered in opposite directions, and means forsecuring the divided rim to the web, substantially as and for thepurpose specified.

lapped ends being secured together, the rim web provided with notches,dowel blocks '10 segmental 3. In a machine ear, the combination of acenter web, a divided rim provided with attaching llanges, there. beingapertures formed in the flanges, and apertures formed in the center web,bolts divided longitudinally and tapered, said bolts adapted to beinserted in the a )ertures of the rim-flanges and web and said dividedltolt. sections secured in position, and dowel blocks located in notchesin the periphery of the web and in the inner wall ol the divided rim,said notches and dowel blocks located at an angle to a radial line,substantially as and for the purpose specified. In testimony that weclaim the above, we have hereunto subscribed our name in the presence oftwo witnesses.

SAMUEL Vi. SMITH. ANDREW HOLLINGER. Witnesses:

J. A. Jsrrnas, F. W. BOND.

